Module entity_store 

The EntityStore maintains all registered entities in the form of EntityRecords, EntityRecords track the count of the instances of the Entity (valid EntityId<Entity> values) and owns the PropertyStore<E>, which manages the entity’s properties.

Although each Entity type may own its own data, client code cannot create or destructure EntityId<Entity> values directly. Instead, EntityStore centrally manages entity counts for all registered types so that only valid (existing) EntityId<E> values are ever created.

Structs

EntityRecord

We store our own instance data alongside the Entity instance itself.

EntityStore

A wrapper around a vector of entities.

Functions

add_to_entity_registry

Adds a new entity to the registry. The job of this method is to create whatever “singleton” data/metadata is associated with the Entity if it doesn’t already exist, which in this case is only the value of Entity::id().

get_entity_metadata_static

Returns the pre-computed, frozen metadata for an entity type.

get_registered_entity_count

A convenience getter for NEXT_ENTITY_INDEX.

initialize_entity_index

Encapsulates the synchronization logic for initializing an entity’s index.

register_property_with_entity

The public setter interface to ENTITY_METADATA.